Roger Quadros 09424c50b7 usb: gadget: f_uvc: Fix SuperSpeed companion descriptor's wBytesPerInterval ...

The streaming_maxburst module parameter is 0 offset (0..15)
so we must add 1 while using it for wBytesPerInterval
calculation for the SuperSpeed companion descriptor.

Without this host uvcvideo driver will always see the wrong
wBytesPerInterval for SuperSpeed uvc gadget and may not find
a suitable video interface endpoint.
e.g. for streaming_maxburst = 0 case it will always
fail as wBytePerInterval was evaluating to 0.

Cc: stable@vger.kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

2017-03-22 11:21:09 +02:00

..

function

usb: gadget: f_uvc: Fix SuperSpeed companion descriptor's wBytesPerInterval

2017-03-22 11:21:09 +02:00

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…

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